Rheological and electrical percolation in melt-processed poly(ether ether ketone)/multi-wall carbon nanotube composites

Autor:	Holger Ruckdäschel, Jan K.W. Sandler, Volker Altstädt, Milo S. P. Shaffer, D. S. Bangarusampath, Didier Garray
Rok vydání:	2009
Předmět:	Nanotube Materials science Composite number General Physics and Astronomy Percolation threshold Ether Carbon nanotube law.invention chemistry.chemical_compound chemistry law Percolation Physical and Theoretical Chemistry Composite material Dispersion (chemistry) Electrical conductor
Zdroj:	Chemical Physics Letters. 482:105-109
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2009.09.064
Popis:	Multi-wall carbon nanotubes were dispersed homogeneously throughout a poly(ether ether ketone) matrix by melt processing. The influence of nanotube content on both rheological and electrical properties was analysed. The dynamic storage modulus, G ′ , shows a characteristic solid-like behavior above 1 wt% nanotubes. A sharp transition from an electrically insulating to a conductive composite was observed between 1 and 1.5 wt%. By applying a power-law relation, the rheological and electrical percolation thresholds were found to be 0.9 wt%, and 1.3 wt%, respectively. Considering this data, Guth’s filler reinforcement theory provides a valuable estimation of the aspect ratio of the nanotubes after processing and indicates substantial length degradation during the dispersion process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a97f31f25b62cdeea12dec397a6f1774 https://doi.org/10.1016/j.cplett.2009.09.064 Zobrazit plný text záznamu Full Text from ScienceDirect